Comparison

StarHi vs SQM Mobile

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

StarHi

Features
Read full description

StarHi is a practical astronomy app that helps you to explore the starry sky. You can mount your phone on a telescope and use the app to help the telescope accurately locate celestial bodies with some simple settings. The app utilizes your phone's time, location, and sensor information to determine the positions of the moon, planets, stars, deep space objects, and constellations in the night sky. Additionally, it provides basic information about various celestial bodies. Main Features: 1. Ensures that the starry sky displayed on the mobile phone matches what is seen through the telescope. 2. Displays the direction in which the telescope is pointing. 3. Simulates the visual fields observed by telescopes of different magnifications and structures. 4. Helps novice astronomers identify and locate celestial objects in the vast night sky. 5. Simulates the starry sky in real-time or at a time and place set by the user. StarHi is a new astronomical application. Compared to other star-finding software, StarHi uses a new algorithm that makes the starry sky displayed on the phone screen consistent with what is seen through the telescope with simple settings. Users can use the app's celestial body information and screen icons to align the telescope with the celestial body they want to observe. Download StarHi now and start your celestial adventure.

About

SQM Mobile

Features
Read full description

Bring all your sky quality measurements together in one place. SQM Mobile is the ideal companion for handheld Sky Quality Meters, automatically synchronizing field measurements with SQM Toolbox on your Mac. It also imports measurements exported from Dark Sky Meter Pro, making it easy to build a single long-term archive of all your observations. KEY FEATURES Field-Ready Data Collection * Quick and easy measurement entry for handheld SQM devices * Manual entry of measurements from Dark Sky Meter * Automatic GPS location recording for each measurement * Timestamp for accurate astronomical correlation * Offline measurement storage โ€“ sync whenever a connection becomes available * Bubble level for accurate zenith pointing * Import measurements exported from Dark Sky Meter Pro Smart Location Features * Automatic GPS coordinate capture * Manual location override (to define local sky-background conditions during site surveys) * Perfect for camping trips, dark-sky site surveys and travel observations Automatic Cloud Sync * Seamlessly sync measurements to SQM Toolbox on your Mac via iCloud * Private, secure storage โ€“ only you can access your measurements * Works anywhere with an internet connection โ€“ no complex setup required * Real-time synchronization across all your Apple devices Quick Analysis * Instant Bortle classification for every measurement * On-device light pollution assessment * Comparison with natural sky-background brightness * Simple graphical display including twilight conditions * Measurement validation and quality indicators * Clean, intuitive interface designed for field use Astronomical Context * Automatic twilight condition detection * Moon phase information for every measurement * Sun elevation calculations Simple and Reliable * Designed for easy use in the dark * Large, clear controls for nighttime operation * No account setup required โ€“ simply use your existing iCloud account Perfect for * Amateur astronomers and citizen scientists carrying out site surveys * Researchers monitoring light pollution * Dark-sky organizations documenting observing conditions * Anyone using handheld SQM instruments or Dark Sky Meter who wants long-term storage, synchronization and analysis of their measurements Requires: iOS 17.0 or later, iCloud account Works with: Unihedron Sky Quality Meter (SQM, SQM-L), Dark Sky Meter Pro imports, and manual entry from Dark Sky Meter. Companion to: SQM Toolbox for macOS (available separately)

Screenshots

StarHi4 screens
SQM Mobile4 screens

Verdict

The call

The clearest difference is update cadence: StarHi at daily against SQM Mobile's every 4 weeks. StarHi also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

StarHi ships an update daily, SQM Mobile every 4 weeks. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

Scorecard3 real differences ยท 3 level
StarHi versus SQM Mobile: the parameters behind the verdict, then further details
ParameterStarHiSQM Mobile
PriceFreeFree
Update frequencyDaily โ€” betterEvery 4 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS12.0 โ€” better17.6
Further details โ€” not scored
Size205 MB42 MB
Age rating4+4+
Developer่ช ๅญ™GerSpatial

In-app purchases

None

StarHi

No in-app purchases

None

SQM Mobile

No in-app purchases

Questions

Is StarHi free?
StarHi is free to download, with no in-app purchases.
Is SQM Mobile free?
SQM Mobile is free to download, with no in-app purchases.
Do StarHi or SQM Mobile have ads?
Neither StarHi nor SQM Mobile shows ads.
Which is updated more often, StarHi or SQM Mobile?
StarHi ships an update daily, and SQM Mobile every 4 weeks. Most recently, StarHi was updated on October 18, 2026 and SQM Mobile on October 12, 2026.

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